Stories from veterans (let the forum recognize its heroes).

I had something like this happen in Heroes 3: my hero is in a town, and suddenly, when I click to end my turn, my hero leaves the town and starts attacking enemies (and he does all of this without my input). The flag above him is still mine. And when I saw that a duplicate remained in the town, one stayed in the town to gather an army, while the other fought the enemies.
Also, there was a battle where, without my input, an illusion of Serpentmen was created.